There are many evils in the world, but extinguishing people’s lives with targeted, extra-judicial killings, when you don’t even know their names, based on “patterns” of behavior judged from thousands of miles away, definitely ranks high on the list. Although the Obama White House has not approved of this request from CIA Director David Petraeus, these so-called “signature strikes” that “allow the agency to hit targets based solely on intelligence indicating patterns of suspicious behavior” are already robustly used in Pakistan — having been started by George Bush in 2008 and aggressively escalated by Barack Obama.